Control of jasmonate biosynthesis and senescence by miR319 targets.

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Version: author
Serval ID
serval:BIB_954CEBA4B1C7
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Control of jasmonate biosynthesis and senescence by miR319 targets.
Journal
PLoS Biology
Author(s)
Schommer C., Palatnik J.F., Aggarwal P., Chételat A., Cubas P., Farmer E.E., Nath U., Weigel D.
ISSN
1545-7885
Publication state
Published
Issued date
2008
Peer-reviewed
Oui
Volume
6
Number
9
Pages
e230
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Abstract
Considerable progress has been made in identifying the targets of plant microRNAs, many of which regulate the stability or translation of mRNAs that encode transcription factors involved in development. In most cases, it is unknown, however, which immediate transcriptional targets mediate downstream effects of the microRNA-regulated transcription factors. We identified a new process controlled by the miR319-regulated clade of TCP (TEOSINTE BRANCHED/CYCLOIDEA/PCF) transcription factor genes. In contrast to other miRNA targets, several of which modulate hormone responses, TCPs control biosynthesis of the hormone jasmonic acid. Furthermore, we demonstrate a previously unrecognized effect of TCPs on leaf senescence, a process in which jasmonic acid has been proposed to be a critical regulator. We propose that miR319-controlled TCP transcription factors coordinate two sequential processes in leaf development: leaf growth, which they negatively regulate, and leaf senescence, which they positively regulate.
Keywords
Arabidopsis, Arabidopsis Proteins, Base Sequence, Cell Aging, Cyclopentanes, Gene Expression Profiling, Gene Expression Regulation, Plant, MicroRNAs, Oxylipins, Plant Leaves, RNA, Plant, Sequence Alignment, Transcription Factors, Transcription, Genetic
Pubmed
Web of science
Open Access
Yes
Create date
24/02/2009 11:41
Last modification date
20/08/2019 14:57
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